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Finding the Fourth Proportional to 733,843.13, 1,012,705.34 and 428,129.69

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Solution

The fourth proportional to 733,843.13, 1,012,705.34 and 428,129.69 is: 590,820.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    733,843.13 : 1,012,705.34 = 428,129.69 : x
  2. Step 2: Convert to fraction form
    733,843.13/1,012,705.34 = 428,129.69/x
  3. Step 3: Cross multiply
    733,843.13x = 1,012,705.34 × 428,129.69
  4. Step 4: Simplify right side
    733,843.13x = 433,569,216,071.37
  5. Step 5: Solve for x
    x = 433,569,216,071.37/733,843.13
  6. Step 6: Final answer
    x = 590,820.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.